<template>
  <view>
    <!-- 结算组件 -->
    <!-- 最外层的容器 -->
    <view class="my-settle-container">
      <!-- 全选区域 -->
      <label class="radio">
        <radio color="#c00000" :checked="ifFullCheck" @click="changeAllState"></radio>
        <text>全选</text>
      </label>

      <!-- 合计区域 -->
      <view class="amount-box">
        合计:<text class="amount">￥{{checkedGoodsAmount}}</text>
      </view>

      <!-- 结算按钮 -->
      <view class="btn-settle">结算({{checkedCount}})</view>
    </view>
  </view>
</template>

<script>
  import {
    mapGetters,
    mapMutations
  } from 'vuex'
  export default {
    computed: {
      //checkedCount 映射勾选商品的总数的方法
      //total 是商品的总数量
      //checkedGoodsAmount 映射勾选商品的总价格
      ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),

      //全选按钮 是否全选
      ifFullCheck() {
        //当商品的数量等于 勾选的数量 就为true 代表全选
        return this.total === this.checkedCount
      }
    },
    data() {
      return {

      };
    },
    methods: {
      //映射更新勾选商品状态的方法
      ...mapMutations('m_cart', ['updateAllGoodsState']),
      changeAllState() {


        //ifFullCheck这个方法是得到当前按钮是勾选 还是不勾选状态
        //取反 就是勾选变不勾选
        this.updateAllGoodsState(!this.ifFullCheck)
      }
    }
  }
</script>

<style lang="scss">
  .my-settle-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    // 将背景色从 cyan 改为 white
    background-color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 5px;
    font-size: 14px;

    .radio {
      display: flex;
      align-items: center;
    }

    .amount {
      color: #c00000;
    }

    .btn-settle {
      height: 50px;
      min-width: 100px;
      background-color: #c00000;
      color: white;
      line-height: 50px;
      text-align: center;
      padding: 0 10px;
    }
  }
</style>